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We may have to rewrite our understanding of gravity

Space

We may have to rewrite our understanding of gravity

There is a mismatch between two ways of measuring galactic mass. Dark matter is one way to solve it, but so is rewriting the laws of gravity, says Chanda Prescod-Weinstein

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Did time flow in two directions from the big bang, making two futures?

Physics

Did time flow in two directions from the big bang, making two futures?

Features

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Space

Space junk foils astronomers observing oldest galaxy in the universe

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A warp drive that doesn't break the laws of physics is possible

Physics

A warp drive that doesn't break the laws of physics is possible

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Crew of mock lunar 'biosphere' grew food and made oxygen for 200 days

Space

Crew of mock lunar 'biosphere' grew food and made oxygen for 200 days

News

Solar Opposites review: Clever, silly and bound to be an instant hit

Space

Solar Opposites review: Clever, silly and bound to be an instant hit

Culture

NASA's Perseverance rover has sent back incredible images from Mars

Space

NASA's Perseverance rover has sent back incredible images from Mars

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NASA's Perseverance rover has landed safely on the surface of Mars

Space

NASA's Perseverance rover has landed safely on the surface of Mars

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The United Arab Emirates’ Hope orbiter is about to arrive at Mars

Space

The United Arab Emirates’ Hope orbiter is about to arrive at Mars

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Rare images show role of collisions in galactic evolution

Space

Rare images show role of collisions in galactic evolution

These six rare and exquisite images of galactic evolution were taken by the Hubble Space Telescope. They show what happens when galaxies collide and merge

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How time works with Sean Carroll

Physics

Physicists find best way for insects to avoid collisions when jumping

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Space

How every galaxy comes from quantum fluctuations billions of years ago

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Space

2021 preview: Three missions will make February 2021 the month of Mars

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